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湿地松苗木黄化病,是湿地松苗木生产的一大问题。我区今年共育湿地松苗220亩,普遍发生黄化现象。据调查,黄化面积约占总面积的90％,其中轻度黄化约占50％,中度黄化约占30％,黄化致死占10％,严重影响了苗木的正常生长,造成了较大的经济损失。调查表明,湿地松苗木黄化现象,主要是生理方面的原因引起的,故暂定名为湿地松苗木生理性黄化病。按其不同的发
Slash pine seedlings yellow disease, is a major issue of pine seedlings production. This year, a total of 220 acres of wetlands pine seedlings, yellowing phenomenon. According to the survey, yellow area accounts for about 90% of the total area, of which mild yellow about 50%, moderate yellow about 30%, yellow death 10%, seriously affecting the normal growth of seedlings, resulting in Greater economic loss. The survey shows that the phenomenon of etiolated Pinus elliottii seedlings, mainly due to physiological causes, it is tentatively named P. elliottii seedlings physiological yellow disease. According to their different hair